Solubility Rules

Question 1

What is the 80% rule?

Answer 1

80% of the time, if the cation has a +1 and the anion is -1, it’s a solute

Question 2

How to strong acids dissolve?

Answer 2

Totally, dissolve into ions

Question 3

How to weak acids dissolve?

Answer 3

Poorly. Will dissolve in water, but no dissociation into ions

Question 4

What are the strong acids?

Answer 4

HCl
HBr
HI
HNO3
HClO3
HCLO4
H2SO4

Question 5

Alkali metals salts are….

Answer 5

Soluble, no exceptions

Question 6

Ammonium salts are…

Answer 6

Soluble, no exceptions

NH4

Question 7

Nitrates are…

Answer 7

Soluble, no exceptions

NO3-

Question 8

Acetates are…

Answer 8

Soluble, no exceptions

C2H3O2-

Question 9

Chlorates are….

Answer 9

Soluble, no exceptions

ClO3-

Question 10

Perchlorate are….

Answer 10

Soluble, no exceptions

ClO4

Question 11

Which chlorides, iodides, and bromides are insoluble?

Answer 11

Silver, Lead (II), Mercury (I)

Question 12

Which sulfates are insoluble?

Answer 12

calcium, strontium, barium, silver, lead (II), mercury (I)

Question 13

Which fluorides are insoluble?

Answer 13

calcium, magnesium, strontium, barium, silver, lead (II), mercury (I)

Question 14

Are hydroxides soluble?

Answer 14

No. Unless w/ and alkali metal or ammonium.

Question 15

Are sulfides soluble?

Answer 15

No, unless w/ an alkali metal or ammonium